There are three industrial plants in Simontown: Plant Current Pollution Level Cost of Reducing Pollution by One Pound A 70 pounds $20 B 80 pounds $25 C 50 pounds $10 The government passes a cap-and-trade policy, giving each plant 40 tradeable permits, each permit allows for one pound of pollution emissions. a. Which plant(s) sells permits, and how many do they each sell? Explain. b. Which plant(s) buys permits, and how many do they each buy? Explain. c. How much pollution is eliminated by this policy? d. Based on your answers, how much will it cost Simontown to achieve this reduction in pollution? e. How much would it cost to achieve this reduction in pollution if the plants could not trade the permits? Explain why making the permits tradeable reduces the cost of pollution reduction